https://techinnovations.ai/library/ Plain explanations of the power, heat, cooling and water behind artificial intelligence, with the sources and dates to check them. en Fri, 30 Oct 2026 09:00:00 +0530 https://techinnovations.ai/library/why-ai-chips-need-cooling/ https://techinnovations.ai/library/why-ai-chips-need-cooling/ Fri, 30 Oct 2026 09:00:00 +0530 Almost every unit of electricity an AI chip uses becomes heat, and that heat has to be carried away continuously for the chip to keep working. Heat, Cooling and Water https://techinnovations.ai/library/how-ai-data-centres-stay-cool/ https://techinnovations.ai/library/how-ai-data-centres-stay-cool/ Fri, 30 Oct 2026 09:00:00 +0530 Cooling an AI data centre is a chain: capture the heat at the chip, carry it out of the hall, and release it outdoors, with a choice of air, liquid or both at each link. Heat, Cooling and Water https://techinnovations.ai/library/how-much-water-does-ai-use/ https://techinnovations.ai/library/how-much-water-does-ai-use/ Fri, 30 Oct 2026 09:00:00 +0530 Estimates of the water behind one AI answer range from a few drops to a small glass, mostly because they count different things. Heat, Cooling and Water https://techinnovations.ai/library/where-cooling-water-goes/ https://techinnovations.ai/library/where-cooling-water-goes/ Fri, 30 Oct 2026 09:00:00 +0530 In a data centre that cools with water, most of the water leaves as vapour, some is drained away to keep the system clean, and a little escapes as mist. Heat, Cooling and Water https://techinnovations.ai/library/cooling-without-freshwater/ https://techinnovations.ai/library/cooling-without-freshwater/ Fri, 30 Oct 2026 09:00:00 +0530 Yes, it can be done, by closing the water loop, releasing heat to the air, or using water that nobody would drink, and each route has its own cost. Heat, Cooling and Water https://techinnovations.ai/library/can-the-ocean-cool-a-data-centre/ https://techinnovations.ai/library/can-the-ocean-cool-a-data-centre/ Fri, 30 Oct 2026 09:00:00 +0530 Yes: cool seawater can take heat from a sealed freshwater loop through a heat exchanger, and at least one large data centre already works this way. Heat, Cooling and Water https://techinnovations.ai/library/warm-water-and-marine-life/ https://techinnovations.ai/library/warm-water-and-marine-life/ Fri, 30 Oct 2026 09:00:00 +0530 Taking in seawater and returning it warmer can affect sea life in two places, at the intake and at the outfall, and both are regulated and can be designed to do less harm. Heat, Cooling and Water https://techinnovations.ai/library/does-saving-water-cost-electricity/ https://techinnovations.ai/library/does-saving-water-cost-electricity/ Fri, 30 Oct 2026 09:00:00 +0530 Often it does: cooling by evaporation saves electricity but uses water, and cooling without it saves water but uses more electricity, so the two must be judged together. Heat, Cooling and Water https://techinnovations.ai/library/how-much-electricity-does-ai-use/ https://techinnovations.ai/library/how-much-electricity-does-ai-use/ Fri, 30 Oct 2026 09:00:00 +0530 One AI answer uses very little electricity; billions of them, plus training, add up to a fast-growing share of the world's power. Power and Energy https://techinnovations.ai/library/why-ai-chips-are-power-hungry/ https://techinnovations.ai/library/why-ai-chips-are-power-hungry/ Fri, 30 Oct 2026 09:00:00 +0530 AI chips do enormous numbers of calculations at once and constantly move data to and from memory, and moving data costs more energy than the calculations themselves. Power and Energy https://techinnovations.ai/library/why-power-connections-take-time/ https://techinnovations.ai/library/why-power-connections-take-time/ Fri, 30 Oct 2026 09:00:00 +0530 A data centre can be built in a couple of years, but new grid lines, transformers and connections often take longer, and that has become the pace-setter for AI. Power and Energy https://techinnovations.ai/library/when-the-power-goes-out/ https://techinnovations.ai/library/when-the-power-goes-out/ Fri, 30 Oct 2026 09:00:00 +0530 Inside the data centre, batteries and generators keep the computers running; outside it, many data centres switching to backup at the same moment can shake the grid itself. Power and Energy https://techinnovations.ai/library/solar-and-wind-around-the-clock/ https://techinnovations.ai/library/solar-and-wind-around-the-clock/ Fri, 30 Oct 2026 09:00:00 +0530 Over a year, yes on paper; hour by hour, only with storage, a mix of sources and careful contracts, because a data centre runs at night and the sun does not. Power and Energy https://techinnovations.ai/library/will-nuclear-power-ai-data-centres/ https://techinnovations.ai/library/will-nuclear-power-ai-data-centres/ Fri, 30 Oct 2026 09:00:00 +0530 Nuclear already supplies a share of data centre electricity, and technology companies are signing for more, but most new reactors are years away. Power and Energy https://techinnovations.ai/library/can-data-centres-help-the-grid/ https://techinnovations.ai/library/can-data-centres-help-the-grid/ Fri, 30 Oct 2026 09:00:00 +0530 Some computing can wait, so a data centre can ease its demand when the grid is stretched, and trials are now testing how far that goes. Power and Energy https://techinnovations.ai/library/where-the-money-goes/ https://techinnovations.ai/library/where-the-money-goes/ Fri, 30 Oct 2026 09:00:00 +0530 In a modern AI data centre, most of the money goes not into the building but into the computers inside it, which also wear out fastest. Economics https://techinnovations.ai/library/what-it-costs-to-build-a-data-centre/ https://techinnovations.ai/library/what-it-costs-to-build-a-data-centre/ Fri, 30 Oct 2026 09:00:00 +0530 Published figures range widely because they measure different things, and AI-ready facilities cost more than traditional ones, mostly for cooling. Economics https://techinnovations.ai/library/who-makes-money-from-an-ai-data-centre/ https://techinnovations.ai/library/who-makes-money-from-an-ai-data-centre/ Fri, 30 Oct 2026 09:00:00 +0530 An AI data centre is a stack of businesses, from the building owner to the company selling computing by the hour, and each layer earns in a different way and carries a different risk. Economics https://techinnovations.ai/library/is-electricity-the-biggest-cost/ https://techinnovations.ai/library/is-electricity-the-biggest-cost/ Fri, 30 Oct 2026 09:00:00 +0530 Electricity is usually the largest running cost, but for an AI data centre the bigger cost over time is replacing the computers. Economics https://techinnovations.ai/library/why-data-centres-differ-in-value/ https://techinnovations.ai/library/why-data-centres-differ-in-value/ Fri, 30 Oct 2026 09:00:00 +0530 Two buildings with the same megawatts can be valued very differently, depending on their contracts, customers, power, connections and location. Economics https://techinnovations.ai/library/should-data-centre-owners-own-the-gpus/ https://techinnovations.ai/library/should-data-centre-owners-own-the-gpus/ Fri, 30 Oct 2026 09:00:00 +0530 Buildings last decades and AI servers a few years, so owning both means running two very different kinds of asset with very different risks. Economics https://techinnovations.ai/library/profitable-before-it-is-full/ https://techinnovations.ai/library/profitable-before-it-is-full/ Fri, 30 Oct 2026 09:00:00 +0530 Much depends on contracts signed before the building is finished: space leased in advance and long committed contracts change the whole cash-flow picture. Economics https://techinnovations.ai/library/where-to-build-the-next-data-centre/ https://techinnovations.ai/library/where-to-build-the-next-data-centre/ Fri, 30 Oct 2026 09:00:00 +0530 Power now decides more than anything else, but land, water, fibre, customers, climate and government policy all have to line up in the same place. Economics